ARM: dts: qcom: sdx55: Add support for PCIe RC controller

The PCIe controller in SDX55 can act as the RC controller also. Let's
add support for it.

Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230308082424.140224-8-manivannan.sadhasivam@linaro.org

Author: Mani-Sadhasivam

arch/arm/boot/dts/qcom-sdx55.dtsi

@@ -304,6 +304,87 @@
 			status = "disabled";
 		};
 
+		pcie_rc: pcie@1c00000 {
+			compatible = "qcom,pcie-sdx55";
+			reg = <0x01c00000 0x3000>,
+			      <0x40000000 0xf1d>,
+			      <0x40000f20 0xc8>,
+			      <0x40001000 0x1000>,
+			      <0x40100000 0x100000>;
+			reg-names = "parf",
+				    "dbi",
+				    "elbi",
+				    "atu",
+				    "config";
+			device_type = "pci";
+			linux,pci-domain = <0>;
+			bus-range = <0x00 0xff>;
+			num-lanes = <1>;
+
+			#address-cells = <3>;
+			#size-cells = <2>;
+
+			ranges = <0x01000000 0x0 0x00000000 0x40200000 0x0 0x100000>,
+				 <0x02000000 0x0 0x40300000 0x40300000 0x0 0x3fd00000>;
+
+			interrupts = <GIC_SPI 119 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 124 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 125 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 126 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "msi",
+					  "msi2",
+					  "msi3",
+					  "msi4",
+					  "msi5",
+					  "msi6",
+					  "msi7",
+					  "msi8";
+			#interrupt-cells = <1>;
+			interrupt-map-mask = <0 0 0 0x7>;
+			interrupt-map = <0 0 0 1 &intc 0 0 0 141 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
+					<0 0 0 2 &intc 0 0 0 142 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
+					<0 0 0 3 &intc 0 0 0 143 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
+					<0 0 0 4 &intc 0 0 0 144 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
+
+			clocks = <&gcc GCC_PCIE_PIPE_CLK>,
+				 <&gcc GCC_PCIE_AUX_CLK>,
+				 <&gcc GCC_PCIE_CFG_AHB_CLK>,
+				 <&gcc GCC_PCIE_MSTR_AXI_CLK>,
+				 <&gcc GCC_PCIE_SLV_AXI_CLK>,
+				 <&gcc GCC_PCIE_SLV_Q2A_AXI_CLK>,
+				 <&gcc GCC_PCIE_SLEEP_CLK>;
+			clock-names = "pipe",
+				      "aux",
+				      "cfg",
+				      "bus_master",
+				      "bus_slave",
+				      "slave_q2a",
+				      "sleep";
+
+			assigned-clocks = <&gcc GCC_PCIE_AUX_CLK>;
+			assigned-clock-rates = <19200000>;
+
+			iommu-map = <0x0   &apps_smmu 0x0200 0x1>,
+				    <0x100 &apps_smmu 0x0201 0x1>,
+				    <0x200 &apps_smmu 0x0202 0x1>,
+				    <0x300 &apps_smmu 0x0203 0x1>,
+				    <0x400 &apps_smmu 0x0204 0x1>;
+
+			resets = <&gcc GCC_PCIE_BCR>;
+			reset-names = "pci";
+
+			power-domains = <&gcc PCIE_GDSC>;
+
+			phys = <&pcie_lane>;
+			phy-names = "pciephy";
+
+			status = "disabled";
+		};
+
 		pcie_ep: pcie-ep@1c00000 {
 			compatible = "qcom,sdx55-pcie-ep";
 			reg = <0x01c00000 0x3000>,